| 2000 №07 (03) | 2000 №07 (05) |
The Paton Welding Journal, 2000, #7, 21-27 pages
Peculiarities of phase and structural transformations occurring in gray cast irons with a differing phosphorus content during thermal-deformation welding cycle
G.M. Kroshina, V.G. Vasiliev, D.P. Novikova
E.O. Paton Electric Welding Institute of the NASU 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine.Abstract
Phase and structural transformations in commercial cast iron SCh20 with a phosphorus content of 0.10 and 0.28 % during welding have been investigated. The effect of the thermal-deformation welding cycle on deformability of cast irons has been studied. Continuous cooling transformation diagrams for austeoite have been plotted. It is shown that an increased phosphorus content of gray cast iron favours development of an intermediate transformation of austenite in the HAZ metal. Peculiarities of behaviour of phosphide eutectic during the thermal-deformation welding cycle have been investigated.
Keywords: fusion welding, gray cast irons, thermaldeformation welding cycle, phase transformations, microstructure, phosphide eutectic, continuous cooling transformation diagram, transformation of austenite, cooling rate, graphite inclusions
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